Practice Test Geeks(ADX) Aircraft Dispatcher Practice Test
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Navigation and Route Planning Flashcards

7 cards from real ADX practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Navigation and Route Planning flashcards as text

  1. When planning a route over mountainous terrain, what minimum enroute altitude (MEA) consideration is MOST critical for a dispatcher?

    Answer: Terrain clearance of 1,000 feet in non-mountainous areas and 2,000 feet in designated mountainous areas

    FAA regulations require 1,000 feet of obstacle clearance in non-mountainous areas and 2,000 feet in designated mountainous areas for IFR enroute operations.

  2. What does the term 'OROCA' stand for and how is it used in route planning?

    Answer: Off-Route Obstacle Clearance Altitude; provides 1,000/2,000 ft obstacle clearance in off-airway areas

    OROCA (Off-Route Obstacle Clearance Altitude) provides the same 1,000/2,000 ft obstacle clearance as MEA but applies to off-airway off-route areas.

  3. A flight is planned from Chicago O'Hare (ORD) to Denver International (DEN). The dispatcher notes a SIGMET for severe turbulence along the direct route. What is the BEST initial course of action?

    Answer: Evaluate an alternate route that avoids the SIGMET area and assess fuel implications

    Dispatchers have joint responsibility for flight safety and must proactively evaluate alternate routing to avoid significant hazards like severe turbulence SIGMETs.

  4. What is the primary purpose of a Standard Instrument Departure (SID) in route planning?

    Answer: To provide a standardized, obstacle-cleared departure path from an airport to the enroute structure

    SIDs provide a standardized, obstacle-cleared transition from the departure airport to the enroute airway structure, simplifying ATC clearances.

  5. When calculating true course on a sectional chart, a dispatcher measures the course as 275°. The variation in the area is 10°E. What is the magnetic course?

    Answer: 265°

    Magnetic course = True course − East variation (or + West variation); 275° − 10°E = 265° magnetic.

  6. What is the significance of the Maximum Authorized Altitude (MAA) on a jet route?

    Answer: It is the highest altitude at which a route is usable, above which ATC cannot guarantee separation or navigation signal reception

    The MAA is the highest usable altitude on a route; above it, navigation signal coverage or ATC separation may not be guaranteed.

  7. During route planning, a dispatcher identifies that a waypoint is listed as 'RNAV only' on the planned route. Which navigation requirement does this impose?

    Answer: The aircraft must be RNAV-equipped and the crew must be trained and authorized for RNAV operations

    RNAV-only waypoints require the aircraft to be properly equipped and the operator to have RNAV authorization; traditional ground-based nav alone is insufficient.